ESXi 6.5.0 Slow Disk Performance

dobrasekwifi · ‎09-27-2019

Hi, I have Windows server 2016 built on ESXi 6.5.0 Update 2 (Build 829453) and I noticed slow disk performance. I have found some tips about bad working drivers of storage and tried this, but with no visible results. I tried upgrade firmware of RAID controller, Bios, iDRAC... Server is DELL PowerEdge R230 with SAS disks.

https://virtualnomadblog.com/2018/08/30/vsphere-6-5-switching-to-native-drivers-in-esxi-6-5/

Windows Server 2016 Really slow on ESXI 6.5

Is this problem with some bug? Or do you know what can I do to increase disk performace? Maybe update some modules?

[root@vmware:~] esxcli system module list

Name Is Loaded Is Enabled

----------------------------- --------- ----------

vmkernel true true

chardevs true true

user true true

crypto true true

vsanapi true true

vsanbase true true

vprobe true true

vmkapi_mgmt true true

iodm true true

dma_mapper_iommu true true

procfs true true

vmkapi_v2_3_0_0_mgmt_shim true true

vmkapi_v2_2_0_0_mgmt_shim true true

vmkapi_v2_2_0_0_vmkernel_shim true true

vmkapi_v2_3_0_0_vmkernel_shim true true

vmkapi_v2_1_0_0_vmkernel_shim true true

vmkusb true true

iscsi_trans true true

iscsi_trans_compat_shim true true

vmkapi_v2_3_0_0_vmklinux_shim true true

vmkplexer true true

vmklinux_9 true true

lsi_mr3 true true

ntg3 true true

vmkapi_v2_2_0_0_iscsiInc_shim true true

vmkapi_v2_3_0_0_iscsiInc_shim true true

etherswitch true true

netsched_fifo true true

netsched_hclk true true

netioc true true

vmklinux_9_2_3_0 true true

cnic_register true true

dm true true

nmp true true

vmw_satp_local true true

vmw_satp_default_aa true true

vmw_psp_lib true true

vmw_psp_fixed true true

vmw_psp_rr true true

vmw_psp_mru true true

vmci true true

healthchk true true

teamcheck true true

vlanmtucheck true true

heartbeat true true

shaper true true

lldp true true

cdp true true

ipfix true true

tcpip4 true true

dvsdev true true

dvfilter true true

lacp true true

vmkapi_v2_1_0_0_dvfilter_shim true true

vmkapi_v2_2_0_0_dvfilter_shim true true

vmkapi_v2_3_0_0_dvfilter_shim true true

libata_92 true true

ahci true true

esxfw true true

dvfilter-generic-fastpath true true

vmkibft true true

gss true true

lvmdriver true true

deltadisk true true

vdfm true true

sunrpc true true

vmfs3 true true

vfat true true

ufs true true

vmklink_mpi true true

swapobj true true

nfsclient true true

nfs41client true true

vflash true true

dell true true

vmkapei true true

procMisc true true

nrdma true true

nrdma_vmkapi_shim true true

vmkapi_v2_3_0_0_rdma_shim true true

ipmi true true

vmkapi_v2_1_0_0_nmp_shim true true

vmkapi_v2_3_0_0_nmp_shim true true

vmkapi_v2_2_0_0_nmp_shim true true

vrdma true true

vmkapi_v2_3_0_0_iscsi_shim true true

vmkapi_v2_2_0_0_iscsi_shim true true

vmkapi_v2_1_0_0_iscsi_shim true true

balloonVMCI true true

hbr_filter true true

ftcpt true true

filtmod true true

svmmirror true true

cbt true true

migrate true true

vfc true true

qflge false false

qfle3 false false

ixgben false false

vmw_ahci false false

Thank you very much for your help.

Peter

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ESXi 6.5.0 Slow Disk Performance